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Updated: Wed, 25 Jan 2012 23:00:00 GMT | By Colleen Last and Felicity Thistlethwaite
The women in Simon Cowell's life

Simon Cowell and Ann-Marie Thomson

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The number one most important woman in Simon Cowell's life is probably Ann-Marie Thomson, the global head of media for Sony Music.

The feisty Brit is Simon's right-hand woman and moved to America to help launch US X Factor. Simon said he hired her because "she understands the relationship that I like to have with the media - a close one."